Cell blocked: Difference between revisions
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*CDMA - Verizon, Sprint, US Cellular, MetroPCS | *CDMA - Verizon, Sprint, US Cellular, MetroPCS | ||
*iDEN - Nextel, Boost, Telus | *iDEN - Nextel, Boost, Telus | ||
*GSM - ATT, TMobile | *GSM - ATT, TMobile | ||
*WCDMA | *WCDMA / UMTS - ATT, TMobile | ||
None of these technologies are decodable by an analog scanner, so therefore the block is no longer necessary. | None of these technologies are decodable by an analog scanner, so therefore the block is no longer necessary. | ||
Revision as of 08:06, 12 July 2015
Cell blocked (or cellular blocked) is a phrase applied to scanners and wideband receivers manufactured for sale in the US which denotes that they comply with the provisions of PL 102-556, which amended Section 302 of the Communications Act 47USC302 - to prohibit manufacture, importation, or certification of scanners which could receive the frequency band allocated for analog AMPS - a type of Mobile Phone Network Technology, "the frequencies allocated to the domestic cellular radio telecommunications service":
- 824-849MHz
- 869-894MHz
The law is now useless since all cellphones currently in use in the U.S.A. are now digital, so an analog receiver won't receive them in a useful way.
Cell phones today use:
- CDMA - Verizon, Sprint, US Cellular, MetroPCS
- iDEN - Nextel, Boost, Telus
- GSM - ATT, TMobile
- WCDMA / UMTS - ATT, TMobile
None of these technologies are decodable by an analog scanner, so therefore the block is no longer necessary.